By: Michael Mckay
There is little rainfall (<50 cm. a year) in the baron desert. They cover about 1/5 of the Earth's surface. Soil in this biome is very shallow and rocky with good drainage. The plants and animals have to be able to conserve water. Most of the animals in the desert are nocturnal, because it is hard to hunt in hot, daytime desert temperatures.
Desert Food Web
Desert plants such as various types of cacti are the producers for this ecosystem. Primary consumers (Insects and rodents) feed off of the producers to get their energy. Tarantulas, scorpions, lizards, and snakes are the secondary consumers who are feasted upon by the tertiary consumers. The desert tertiary consumers are hawks and foxes.
( Source: http://goo.gl/wcv52G )
Desert Energy Pyramid
The producers (cacti) begin with 100% energy. The primary consumers (Insects, Rodents) receive 10% of producers energy. The tarantulas, scorpions, snakes, and lizards (secondary consumers) take 1% of that energy, and the tertiary (hawks and foxes) get .1% energy.
( Pyramid Template: http://goo.gl/cDdR9s )
The Carbon cycle is a flow of carbon dioxide coming from the atmosphere and coming to the animals down on earth. Plants get there carbon from the atmosphere and the animals get It from the plants. Carbon goes back to the atmosphere through cellular respiration.